Osier O"sier, n. [F. osier: cf. {Prov}. F. oisis, Armor. ozil,
aozil, Gr. ?, ?, ?, L. vitex, and E. withy.] (Bot.)
(a) A kind of willow ({Salix viminalis}) growing in wet
places in Europe and Asia, and introduced into North
America. It is considered the best of the willows for
basket work. The name is sometimes given to any kind
of willow.
(b) One of the long, pliable twigs of this plant, or of
other similar plants.
[1913 Webster]